CN202007804U - Throttle valve with pressure protection function - Google Patents
Throttle valve with pressure protection function Download PDFInfo
- Publication number
- CN202007804U CN202007804U CN2011200892994U CN201120089299U CN202007804U CN 202007804 U CN202007804 U CN 202007804U CN 2011200892994 U CN2011200892994 U CN 2011200892994U CN 201120089299 U CN201120089299 U CN 201120089299U CN 202007804 U CN202007804 U CN 202007804U
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- Prior art keywords
- valve
- main
- valve body
- plug
- hydraulic fluid
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- Expired - Lifetime
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Abstract
The utility model discloses a throttle valve with a pressure protection function, which comprises a valve body, a main valve core arranged in a valve body hole and a regulating screw arranged at one end of the main valve core. The regulating screw is connected with the valve body through an end cover. The valve body is provided with a first oil port and a second oil port which are both communicated with the valve body hole. The other end of the main valve core is provided with a plug. A throttling channel communicated with the first oil port is arranged in the plug. A longitudinal channel communicated with the valve body hole and a transverse channel communicated with the longitudinal channel and the throttling channel are arranged in the main valve core. A safety valve is arranged in the transverse channel. The safety valve comprises a sealing head for compressing an oil inlet of the transverse channel and a spring connected with the sealing head. The spring is arranged in the main valve core. The throttle valve is made into an inserted throttle valve with small installation space. The fixed pressure safety valve is integrated on the main valve core. The space is saved. The weight is reduced. The material consumption is reduced. The production cost is reduced. Meanwhile, the throttle valve also has the advantages that the throttle valve is easy to install; the noise is low; and the like.
Description
Technical field
The utility model relates to a kind of throttle valve, what be specifically related to is a kind of throttle valve with pressure protect.
Background technique
Hydraulic sterring engine is the steering equipment that is used on the boats and ships, and at present the hydraulic sterring engine system of big flow is for reducing power loss and system's heating value, general one overlap steering gear system with two oil pumps respectively as the power source of dynamicliquid pressure system and controlled hydraulic system.The power source flow of controlled hydraulic system is very little, but requires to remain at the pilot pressure about 1MPa.Because general relief valve pressure regulation range is higher relatively, low pressure is difficult for adjusting, and is in overflow situation for a long time, and vibrations are higher with noise; Regulate and carry out pressure with the throttle valve throttling, in the time of will preventing simultaneously that then throttle valve from cutting out fully or stopping up, the build-up of pressure superelevation, and damage components and parts.So throttle valve and safety valve are used simultaneously, but throttle valve and safety valve installing space are bigger, cost also improves greatly.
The model utility content
At the deficiency that exists on the prior art, the utility model purpose is to be to provide a kind of throttle valve with pressure protect, and functional equivalent adds safety valve in throttle valve, has both saved the space, has reduced cost of production again.
To achieve these goals, the utility model is to realize by the following technical solutions:
The utility model comprises valve body, be arranged on the main valve plug in the valve body hole and be installed in the adjusting screw rod of main valve plug one end, adjusting screw rod is connected with valve body by end cap, valve body is provided with first hydraulic fluid port and second hydraulic fluid port that all communicates with valve body hole, the other end of main valve plug is equipped with plug, is provided with the throttling passage that communicates with first hydraulic fluid port in the plug; Be provided with vertical passage that communicates with valve body hole and the crosspassage that communicates with vertical passage and throttling passage in the main valve plug, be provided with safety valve in the crosspassage; Safety valve comprises that being used to compress the sealing head of crosspassage filler opening is used to compress the spring of sealing head with being connected with sealing head, and spring is installed in the main valve plug.Conserve space has reduced cost simultaneously.
Be provided with seal ring between above-mentioned main valve plug and the valve body.By seal ring hydraulic oil is sealed.
Above-mentioned first hydraulic fluid port is the main return opening that has restriction, and second hydraulic fluid port is main filler opening.
Above-mentioned first hydraulic fluid port is the main filler opening that has restriction, and second hydraulic fluid port is main return opening.
The utility model is on existing basis of using throttle valve and safety valve simultaneously, its structure has been carried out optimizing improvement, made the less cartridge throttle valve of installing space, and on main valve plug integrated constant-pressure type safety valve, the function of two valves is integrated on the cartridge valve, has saved the space, alleviated weight, reduced the consumption of material, reduce cost of production, also had advantages such as easy installation, low noise simultaneously.
Description of drawings
Describe the utility model in detail below in conjunction with the drawings and specific embodiments;
Fig. 1 is an example structure schematic representation of the present utility model;
Fig. 2 is another example structure schematic representation of the present utility model.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with embodiment, further set forth the utility model.
The utility model comprises valve body 1, is arranged on main valve plug 3, plug 8 and adjusting screw rod 4 in the valve body hole 2, wherein, the right-hand member of main valve plug 3 is installed in the inside of adjusting screw rod 4, plug 8 is installed in the left end of main valve plug 3, adjusting screw rod 4 is connected with valve body 1 by end cap 5, and end cap 5 is fixed in the outer surface of valve body 1 by a plurality of socket head screws; Be provided with seal ring 14 between main valve plug 3 and the valve body 1, seal by 14 pairs of hydraulic oil of seal ring, valve body 1 is provided with first hydraulic fluid port 6 and second hydraulic fluid port 7 that all communicates with valve body hole 2, is provided with throttling passage 9 in the plug 8, and this throttling passage 9 can communicate with first hydraulic fluid port 6.Use adjusting screw rod 4 can adjust the position of main valve plug 3, hydraulic oil can be passed through in the valve body hole of having set 2, thereby can obtain the hydraulic oil of relatively stable flow at oil outlet.
The inside of main valve plug 3 is provided with passage, and this passage comprises crosspassage 11 and the vertical passage 10 that communicates with valve body hole 2, and the right-hand member of crosspassage 11 communicates with vertical passage 10, and left end communicates with throttling passage 9, is provided with safety valve in the crosspassage 11.
Referring to Fig. 1, first hydraulic fluid port 6 is for having the main return opening of restriction 15, and second hydraulic fluid port 7 is main filler opening.Safety valve comprises that the sealing head 12 that can compress the crosspassage filler opening is used to compress the spring 13 of sealing head 12 with being connected with sealing head 12 left ends, and the left end of spring 13 is installed in the main valve plug 3.When the pressure of crosspassage filler opening during greater than spring force, hydraulic oil promotes sealing head 12 and is moved to the left, and sealing head 12 just leaves the crosspassage filler opening, and main filler opening is linked to each other with main return opening, thus voltage-limiting protection; When the pressure of crosspassage filler opening during less than spring force, spring 13 is with sealing head 12 tight being pressed on the crosspassage filler opening, and hydraulic oil then can not flow to main return opening from main filler opening by safety valve, only can flow to main return opening by restriction 15.
Referring to Fig. 2, first hydraulic fluid port 6 is for having the main filler opening of restriction 15, second hydraulic fluid port 7 is main return opening, and safety valve comprises that the sealing head 12 that can compress the crosspassage filler opening is used to compress the spring 13 of sealing head 12 with being connected with sealing head 12 right-hand members, and the right-hand member of spring 13 is installed in the main valve plug 3.When the pressure of crosspassage filler opening during greater than spring force, hydraulic oil promotes sealing head 12 and moves right, and sealing head 12 just leaves the crosspassage filler opening, and main filler opening is linked to each other with main return opening, thus voltage-limiting protection; When the pressure of crosspassage filler opening during less than spring force, spring force is with sealing head 12 tight being pressed on the crosspassage filler opening, and hydraulic oil then can not flow to main return opening from main filler opening by safety valve, only can flow to main return opening by restriction 15.
More than show and described basic principle of the present utility model and major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (4)
1. throttle valve with pressure protect; comprise valve body (1), be arranged on the main valve plug (3) in the valve body hole (2) and be installed in the adjusting screw rod (4) of main valve plug (3) one ends; described adjusting screw rod (4) is connected with valve body (1) by end cap (5); described valve body (1) is provided with first hydraulic fluid port (6) and second hydraulic fluid port (7) that all communicates with valve body hole (2); it is characterized in that
The other end of described main valve plug (3) is equipped with plug (8), is provided with the throttling passage (9) that communicates with first hydraulic fluid port (6) in the described plug (8); Be provided with vertical passage (10) that communicates with valve body hole (2) and the crosspassage (11) that communicates with vertical passage (10) and throttling passage (9) in the described main valve plug (3), described crosspassage is provided with safety valve in (11);
Described safety valve comprises sealing head (12) that is used to compress the crosspassage filler opening and the spring (13) that is connected with sealing head (12), and described spring (13) is installed in the main valve plug (3).
2. the throttle valve of band pressure protect according to claim 1 is characterized in that, is provided with seal ring (14) between described main valve plug (3) and the valve body (1).
3. the throttle valve of band pressure protect according to claim 1 and 2 is characterized in that, described first hydraulic fluid port (6) is for having the main return opening of restriction (15), and described second hydraulic fluid port (7) is main filler opening.
4. the throttle valve of band pressure protect according to claim 1 and 2 is characterized in that, described first hydraulic fluid port (6) is for having the main filler opening of restriction (15), and described second hydraulic fluid port (7) is main return opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200892994U CN202007804U (en) | 2011-03-30 | 2011-03-30 | Throttle valve with pressure protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200892994U CN202007804U (en) | 2011-03-30 | 2011-03-30 | Throttle valve with pressure protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202007804U true CN202007804U (en) | 2011-10-12 |
Family
ID=44749461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200892994U Expired - Lifetime CN202007804U (en) | 2011-03-30 | 2011-03-30 | Throttle valve with pressure protection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202007804U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105041754A (en) * | 2015-08-24 | 2015-11-11 | 南京埃斯顿自动化股份有限公司 | Throttling overflow valve |
| CN108869419A (en) * | 2018-08-01 | 2018-11-23 | 中国煤炭科工集团太原研究院有限公司 | One kind being based on all-hydraulic constant current speed adjustable control device and its control system |
-
2011
- 2011-03-30 CN CN2011200892994U patent/CN202007804U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105041754A (en) * | 2015-08-24 | 2015-11-11 | 南京埃斯顿自动化股份有限公司 | Throttling overflow valve |
| CN108869419A (en) * | 2018-08-01 | 2018-11-23 | 中国煤炭科工集团太原研究院有限公司 | One kind being based on all-hydraulic constant current speed adjustable control device and its control system |
| CN108869419B (en) * | 2018-08-01 | 2019-12-03 | 中国煤炭科工集团太原研究院有限公司 | A full hydraulic constant flow adjustable speed control device and its control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111012 |
|
| CX01 | Expiry of patent term |